| Placy-Montaigu | |
| Arrondissement: | Saint-Lô |
| Canton: | Condé-sur-Vire |
| Commune: | Saint-Amand-Villages |
| Insee: | 50404 |
| Postal Code: | 50160 |
| Coordinates: | 49.0311°N -0.9047°W |
| Elevation M: | 170 |
| Elevation Min M: | 109 |
| Elevation Max M: | 228 |
| Area Km2: | 8.99 |
| Population: | 234 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Placy-Montaigu (in French pronounced as /plasi mɔ̃tɛɡy/) is a former commune in the Manche department in Normandy in north-western France. On 1 January 2017, it was merged into the new commune Saint-Amand-Villages.[2]